-80% is the change from 835 to 167
Calculation steps:
[( 167 - 835 ) ÷ 835] x 100 = -80%
Formula
Percentage change = [(167 - 835) / 835] x 100
Subtract the new number by the original number
167 - 835 = -668
-668 ÷ 835 = -0.8
-0.8 x 100 = -80%
Example